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Simplifying -49d2 + ad2 + -154d = 0 Reorder the terms: ad2 + -154d + -49d2 = 0 Solving ad2 + -154d + -49d2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '154d' to each side of the equation. ad2 + -154d + 154d + -49d2 = 0 + 154d Combine like terms: -154d + 154d = 0 ad2 + 0 + -49d2 = 0 + 154d ad2 + -49d2 = 0 + 154d Remove the zero: ad2 + -49d2 = 154d Add '49d2' to each side of the equation. ad2 + -49d2 + 49d2 = 154d + 49d2 Combine like terms: -49d2 + 49d2 = 0 ad2 + 0 = 154d + 49d2 ad2 = 154d + 49d2 Divide each side by 'd2'. a = 154d-1 + 49 Simplifying a = 154d-1 + 49 Reorder the terms: a = 49 + 154d-1
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